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Round|Lab Grown|IGI

1.61ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG445037465

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445037465

Diamond specifications and retailer prices

From £1,430 GBP
As of November 5, 2026
Save £1,678 GBP (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,723 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.61ct lab-grown round diamond

This 1.61ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445037465 or 445037465. Listed at 9 retailers as of November 5, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.61
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445037465
Dimensions7.52 × 7.56 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.52 mm7.56 mm1.61 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445037465
Side View
Table 55.5%Crown 31.8°GirdlePavilion 41.6°Culet: NoneDepth 62.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,723 GBP|Low: £1,372 GBP|High: £4,793 GBP|Avg: £2,553 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4£1,430 GBP
Retailer 5£1,658 GBP
Retailer 7£1,658 GBP
Retailer 2£1,813 GBP
Retailer 8£2,120 GBP
Retailer 6£2,597 GBP
Retailer 3£2,722 GBP
Retailer 9£3,710 GBP
MOH London£4,723 GBP

38 data points across 9 retailers

9 retailers£1,430 GBP to £3,108 GBP

B
Cheapest Retailer
-
£1,430 GBP
B
Retailer 2
-
£1,555 GBP
View
B
Retailer 3
-
£1,658 GBP
View
Retailer 4
-
£1,658 GBP
View
Price last confirmed 26 days ago
B
Retailer 5
-
£1,813 GBP
View
B
Retailer 6
-
£2,597 GBP
View
C
Retailer 7
-
£2,722 GBP
View
C
Retailer 8
-
£3,108 GBP
View
Most Expensive
MOH London
LG445037465 · Nov 5
£4,723 GBP
View
Price under review
8 more retailers have this diamond
Prices start from £1,430 GBPSave up to £1,678 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.61ct Round
£1,430 GBP